Which of these human actions has the greatest influence on the quality of air?
A.
building houses
B.
driving cars
C.
creating dams
D.
littering

Respuesta :

Answer:

cars it should be

Explanation:

Answer:

B

Explanation:

Driving cars is one of the main problems for the air quality. It produces a significant amounts of nitrogen oxides, carbon monoxide, and other pollution.